US5273232A - Weft stand - Google Patents

Weft stand Download PDF

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Publication number
US5273232A
US5273232A US07/890,018 US89001892A US5273232A US 5273232 A US5273232 A US 5273232A US 89001892 A US89001892 A US 89001892A US 5273232 A US5273232 A US 5273232A
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US
United States
Prior art keywords
shaft
weft
axis
horizontal axis
supporting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/890,018
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English (en)
Inventor
Kiyoaki Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsudakoma Corp
Original Assignee
Tsudakoma Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tsudakoma Industrial Co Ltd filed Critical Tsudakoma Industrial Co Ltd
Assigned to TSUDAKOMA KOGYO KABUSHIKI KAISHA reassignment TSUDAKOMA KOGYO KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: MORI, KIYOAKI
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Publication of US5273232A publication Critical patent/US5273232A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • D03D47/34—Handling the weft between bulk storage and weft-inserting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/02—Methods or apparatus in which packages do not rotate
    • B65H49/04—Package-supporting devices
    • B65H49/10—Package-supporting devices for one operative package and one or more reserve packages
    • B65H49/12—Package-supporting devices for one operative package and one or more reserve packages the reserve packages being mounted to permit manual or automatic transfer to operating position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • This invention relates to a weft stand for holding a plurality of weft packages for the feed of a weft to a weaving machine.
  • a conventional weft stand has a supporting member supported on a post for rotation about a horizontal axis.
  • the supporting member is provided with a supporting shaft which is inserted into holes of a plurality of weft packages or trays to support.
  • the respective supporting shafts are disposed so as to form a predetermined angle with respect to the horizontal axis.
  • the horizontal axis is the axis of rotation the supporting member. Accordingly, an axis of the weft package, from which the weft is released, is directed to a yarn guide (see Japanese Patent Public Disclosure (KOKAI) No. 2-104745).
  • the conventional weft stand should be provided with a weft package grasping mechanism on each supporting shaft to prevent the weft package from slipping off the downwardly extending supporting shafts downwardly extending.
  • the weft package grasping mechanism prevents an automatic feed of the weft package to the weft stand and complicates the structure of the weft stand.
  • the supporting shaft for the weft package is in parallel with the axis of rotation of the supporting member. Consequently, the direction of the supporting shaft remins unchanged, even if the supporting member is rotated. Therefore, the weft package never slips off the supporting shaft supported by the supporting member.
  • the supporting member and the supporting shafts are controlled so as to be rotated in the respective opposite directions at each identical rotation angle by the rotation controlling means. Accordingly, when the supporting member is rotated, a rotation angle position of a point on each supporting shaft is permanently maintained. Therefore, the weft package, from which the weft is released, can be maintained at a desired position without providing the weft package with grasping mechanism.
  • the rotation controlling means may comprise a first planetary gear secured to the respective supporting shafts, a second planetary gear rotatably supported on the supporting member about an axis in parallel with the horizontal axis and meshing with the first planetary gear, and a sun gear secured to the post, meshing with the second planetary gear and having the same number of teeth as the first planetary gear has.
  • the second planetary gear rotated with the supporting member, is rotated counterclockwise about its axis since the sun gear is fixed. Consequently, the first gear is rotated in a clockwise manner according to the rotation of the second planetary gear.
  • the first planetary gear has the same number of the teeth as of the sun gear has. Therefore, the first gear has the same rotational angle about its axis as the supporting member has.
  • the rotation controlling means may comprises a rotary member supported on the stand about an eccentric axis in parallel with and the horizontal axis, a shaft member disposed on the rotary member corresponding to the respective supporting shaft and rotatably supported in conjunction with and spaced from the respective supporting shafts by the same interval as that between the horizontal axis and the eccentric axis, and a connecting member secured to the respective supporting shafts and the respective shaft members to connect each with the other.
  • the supporting member when the rotary member is rotated about the eccentric axis, the supporting member is rotated about the horizontal axis and accompanies the rotary member. At this time, the shaft member and the supporting shaft are provided with a mutual interval which is permanently maintained therebetween. And each draws a respectively different locus of rotation. Thus, the supporting shaft is rotated about its axis by the same angle of rotation as that of the supporting member.
  • the supporting member may include a plurality of extending portions, through which the supporting shaft is passed, which radially extends from the horizontal axis.
  • the supporting member may include a plurality of extending portions each composed of a plurality of pieces which can be bent in the extending direction relative to the horizontal axis.
  • the extending portion may be provided with a cam member which engages the extending portions one by one at a predetermined rotational position when the supporting member is rotated, and causes the, extending portions to bend.
  • the extending portions are bent to have substantially shorter radial lengths when bent.
  • the supporting shaft passing through the extending portions receives a tensile force in the horizontal axial direction. Consequently, the supporting shaft is rotated about the axis of the shaft member corresponding to the supporting shaft.
  • a position of a point on the supporting shaft is varied about the axis of the supporting shaft. Therefore, the weft package disposed at a position where the weft is not released can be, for example, directed to a yarn guide by forcedly changing the position of the supporting shaft.
  • Another weft stand comprises a post, a supporting member supported on the post and rotatable about a horizontal axis, a supporting shaft for each weft package, rotatably supported on the supporting member about an axis in parallel with the horizontal axis, a pedestal rotatably supported on the supporting shaft, and a heavy bob suspended from the pedestal.
  • the heavy bob suspended from the pedestal carries a vertical force all the time. Therefore, the weft package provided on the pedestal can be maintained at a constant position irrespective of rotation of the supporting member.
  • FIG. 1 is a front view of a weft stand according to the present invention
  • FIG. 2 is a sectional view, substantially enlarged, of the weft stand of FIG. 1;
  • FIG. 3 is a front view of another weft stand according to the present invention.
  • FIG. 4 is a sectional view, substantially enlarged, of the weft stand of FIG. 3;
  • FIG. 5 is a partial front view of a further weft stand according to the present invention.
  • the weft stand 10 holds a plurality of weft packages 12 (three packages are illustrated in the figure) to feed a weft to a weaving machine (not shown).
  • the weft packages 12 are held at each position, i.e., a released position, an exchanging position, and a waiting position.
  • released position refers to a position to release the weft from the weft package.
  • exchanging position refers to a position to exchange a weft package in which the weft is consumed for a new weft package.
  • waiting position refers to a position where the weft package waits for further releasing the weft when the weft of the weft package is consumed.
  • the weft is fed from the weft package 12 disposed at the released position through a yarn guide 13 to the weaving machine.
  • the weft stand 10 comprises a post 14, a supporting member 16 rotatably supported on the post 14 about a horizontal axis, a supporting shaft 18 for each weft package 12, rotatably supported on the supporting member 16 about an axis in parallel with the horizontal axis, and rotation controlling means 20 for rotating the supporting member 16 and each supporting shaft 18 in the respective opposite directions at each identical rotation angle.
  • the supporting member 16 comprises a disk.
  • the three supporting shafts 18 are disposed in the vicinity of a circumference of the disk at the circumferential regular intervals therebetween to pass through the disk.
  • Reference numeral 22 refers to a bearing for each supporting shaft 18.
  • a pedestal 30 is mounted on one end of the supporting shaft 18.
  • the pedestal 30 has a pin 28 which can be inserted into a hole 26 of a tray 24 mounted on the weft package 12.
  • the pin 28 is set to extend upwardly in the released position.
  • the tray 24, when fitted into the pin 28, directs the axis of the weft package 12, i.e., the axis of a bobbin toward the yarn guide 13.
  • the rotation controlling means 20 comprises a first planetary gear 32 secured to each supporting shaft 18, a second planetary gear 34 rotatably supported on the supporting member 16 about an axis in parallel with the horizontal axis and meshing with the first planetary gear 32, and a sun gear 36 secured to the post 14, meshing with the second planetary gear 34 and having the same number of teeth as that of teeth of the first planetary gear 32.
  • the first planetary gear 32 as shown in FIGS. 1 and 2 is disposed around the supporting shaft 18 and is integrally formed with the supporting shaft 18.
  • the second planetary gear 34 has a shaft portion 34a passing through the disk.
  • a bearing 38 is disposed between the shaft portion 34a and the disk. Further, according to a preferred embodiment as shown in FIGS. 1 and 2, the second planetary gear 34 has more teeth than those of the first planetary gear 32.
  • the sun gear 36 has a shaft portion 36a rigidly mounted on a mounting portion 40 which is secured to the post 14.
  • the shaft portion 36a of the sun gear 36 passes through an intermediate portion of the disk 16.
  • a bearing 42 is disposed between the shaft portion 36a and the disk 16.
  • the disk 16 has a gear 44 which is integrally formed with the disk 16 and surrounds the bearing 42.
  • the gear 44 meshes with a pinion 48 mounted on an output shaft of a motor 46 which is secured to the mounting portion 40.
  • the disk 16 When the motor 46 is driven, the disk 16 is rotated about the shaft portion 36a, i.e., the horizontal axis.
  • the second planetary gear 34 is rotated about the shaft portion 36a in conjunction with the disk 16, and meshes with the fixed sun gear 36. Accordingly, the second planetary gear 34 is rotated about the axis of the shaft portion 34a, i.e., an axis in parallel with the horizontal axis.
  • a rotation angle of the disk 16 is equal to a value obtained by dividing a value, which is obtained by multiplying the rotation angle of the second planetary gear 34 by the number of teeth of the second planetary gear 34, by the number of teeth of the sun gear 36.
  • Torque of the second planetary gear 34 is transmitted to the first planetary gear 32 meshing with the second planetary gear 34.
  • the torque allows to rotate the first planetary gear 32 in conjunction with the supporting shaft 18.
  • the first planetary gear 32 has the same number of teeth as that of teeth of the sun gear 36. Therefore, the first planetary gear 32 and the supporting shaft 18 have the same angle of rotation as that of the disk 16.
  • the position of the weft package 12 in the released position can be permanently maintained even in the exchanging position where the disk 16 is rotated counterclockwise substantially 120 degrees, as viewed in FIG. 1, and also can be so maintained even in the waiting position where the disk 16 is further rotated counterclockwise substantially 120 degrees. Further, the weft package 12 can be held at the same position while the disk is transferred between the respective positions. Therefore, when the disk 16 is rotated, the tray 24 can be held at the constant position where the tray 24 never slips off the pin 28.
  • FIGS. 3 and 4 another embodiment of the rotation controlling means 50 is described hereinafter.
  • the rotation controlling means 50 comprises a rotary member 52 supported on the stand 14 for rotation about a horizontal axis, i.e., an eccentric axis L2 in parallel with a horizontal axis L1 of a supporting member 16, a shaft member 56 is rotatably supported on the rotary member 52 corresponding to each supporting shaft 18, the distance between an axis of each shaft member 56 and the corresponding shaft 18 being the same as that between the first and second horizontal axes L1 and L2.
  • the axis L1 of the supporting member 16 is disposed above the axis L2 of the rotary member 52, and is arranged in a vertical plane perpendicular to the drawing as viewed in FIG. 3.
  • Each axis of the supporting shaft 18 and the corresponding shaft member 56 is arranged in a vertical plane in parallel with the above vertical plane.
  • the supporting member 16 has three extending portions 60 radially extending from the horizontal axis L1 to form isometric angles therebetween.
  • Each extending portion 60 comprises four plate pieces 60a through 60d which are aligned with each other and are rockably connected with each other.
  • the extending portion 60 can be bent in the direction of the axis L1.
  • the supporting member 16 is mounted on the post 14 through a shaft 62, a cam member 64, and a shaft 66.
  • the pieces 60a serving as the respective original ends of the three extending portions are fixed to each other.
  • the shaft 62 passes through the pieces 60a.
  • the cam member 64 as described later, is secured to the shaft 62.
  • the shaft 66 of the rotary member 52 is secured to the cam member 64. Accordingly, the supporting member 16 can be rotated about the shaft 62.
  • the rotary member 52 has three extending portions 68 radially extending from the eccentric axis L2 to form isometric angles therebetween as in the case of the supporting member 16.
  • the three extending portions 68 comprises a single plate member.
  • a shaft 72 having a large diameter portion and a small diameter portion extends from a mounting member 70 secured to the post 14.
  • the small diameter portion of the shaft 72 passes through a cross portion of the three extending portions 68 on the rotary member 52. Accordingly, the rotary member 52 can be rotated about the small diameter portion of the shaft 72.
  • a gear 74 is rotatably disposed about the large diameter portion of the shaft 72, and is secured to the rotary member 52.
  • the gear 74 meshes with a pinion 78 secured to an output shaft of a motor 76 which is mounted on the mounting member 70. Consequently, the rotary member 52 is rotated about the eccentric axis L2 in response to drive of the motor 76.
  • the rotary member 52 is rotated counterclockwise as viewed in FIG. 3.
  • torque of the rotary member 52 is transmitted to the supporting member 16 through the shaft member 56, the connecting member 58 and the supporting shaft 18.
  • the supporting member 16 can be rotated counterclockwise about the axis L1. Since the rotary member 52 and the supporting member 16 are rotated about each different axis, the shaft member 56 and the supporting shaft 18 draw each different circular locus.
  • the shaft member 56 and the supporting shaft 18 connected with each other are rotated about each axis.
  • the shaft member 56 and the supporting shaft 18 have the same rotation angle as that of the rotary member 52 and the supporting member 16.
  • a point on a peripheral surface of the supporting shaft 18 can be permanently held about the axis of the supporting shaft 18 at any rotation angle.
  • the tray 24 is supported by the supporting shaft 18 and the weft package 12 is secured to the tray.
  • the weft package 12 disposed at the uppermost released position can be positioned toward the yarn guide 13.
  • the position of the weft package 12 can be permanently maintained even in the exchanging position where the weft package 12 is rotated counterclockwise substantially 120 degrees, and even in the waiting position where the weft package 12 is further rotated counterclockwise substantially 120 degrees.
  • a weft withdrawing apparatus including the yarn guide 13 may be moved toward the weft package 12 disposed in the waiting position to withdraw the weft from the weft package 12.
  • the weft package in the waiting position is preferably disposed toward the yarn guide 13.
  • each extending portion 60 of the supporting member 16 can be bent and is provided with the cam member 64.
  • the piece 60b includes a roller 82 which can engage the cam member 64.
  • the cam member 64 is disposed at a position corresponding to the waiting position, and is secured to one end of the small diameter portion of the shaft 72. Therefore, when the rotation of the extending portion 60 of the supporting member 16 is stopped at the waiting position, the roller 82 engages the cam member 64.
  • the piece 60b having the roller 82 is rocked with respect to the adjacent piece 60a. Further, the rocked piece 60b causes the adjacent piece 60c to rock.
  • the respective pieces 60b and 60c are rocked so that the radial length of the extending portion 60 having the pieces is substantially decreased. Accordingly, the supporting shaft 18 passing through the end piece 60d is rotated about the axis of the shaft 18 counterclockwise as viewed in FIG. 3. At this time, the vertical plane including each axis of the supporting shaft 18 and the corresponding shaft member 56 is turned into an inclined plane. A rotation angle of the supporting shaft 18 in this condition may be determined by considering the position of the yarn guide 13.
  • the roller 82 is rolled on the cam member 64 and thereafter, the roller 82 is separated from the cam member 64. While the roller 82 leaves the cam member 64 and the supporting shaft 18 moves from the waiting position to the released position counterclockwise as viewed in FIG. 3, the shaft 18 is rotated counterclockwise by the weight of the package supported thereby. Therefore, the piece 60d receives a radially outward tensile force. As a result, the pieces 60b and 60c in a bent state are extended to be straight in said radial direction and returned to their original positions. Accordingly, the supporting shaft 18 and the shaft member 56 are rotated about each axis thereof. Instead of the roller 82, the piece 60b may have a projection. Reference numerals 84, 86 refer to bearings for the supporting shaft 18 and the shaft member 56, respectively.
  • the supporting member 16 may include three extending portions 88 as in the case of the extending portions 68 of the rotary member 52.
  • a pedestal 30 is secured on the supporting shaft 18 mounted on each one end of the three extending portions 88.
  • the pedestal 30 having the pin 28 may be provided with a heavy bob weight 90 suspended from the pedestal 30.
  • the supporting member 16 is rotated counterclockwise by, for example, a motor, the heavy bob 90 is vertically attracted by gravity. Accordingly, the weft package 12 and the pedestal 30 are reversely rotated clockwise by the rotation angle of the supporting member 16 in conjunction with the supporting shaft 18. As a result, the weft package 12 can be permanently held in a constant position.
  • the supporting shaft 18 may be secured to the supporting member 16 such that the pedestal 30 can be rotated about the supporting shaft 18.
  • a motor (not shown) may be employed for another embodiment of the rotation controlling means, i.e., means for rotating the supporting shaft 18. More particularly, the single motor is provided on the supporting member 16.
  • a motor shaft and the supporting shaft 18 are connected with each other such that the motor is rotated to rotate each supporting shaft 18 about each axis simultaneously.
  • the rotation angle of the supporting member 16 is detected. Accordingly, the rotation of the motor may be controlled such that each supporting shaft 18 and the supporting member 16 are rotated in the respective opposite directions at the same rotation angle as the detected rotation angle.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Unwinding Of Filamentary Materials (AREA)
US07/890,018 1991-06-11 1992-05-28 Weft stand Expired - Fee Related US5273232A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3-165226 1991-06-11
JP3165226A JP2859977B2 (ja) 1991-06-11 1991-06-11 給糸スタンド

Publications (1)

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US5273232A true US5273232A (en) 1993-12-28

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US07/890,018 Expired - Fee Related US5273232A (en) 1991-06-11 1992-05-28 Weft stand

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US (1) US5273232A (fr)
EP (1) EP0518531B1 (fr)
JP (1) JP2859977B2 (fr)
DE (1) DE69217581D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008028073B3 (de) * 2008-06-12 2009-12-10 Madeira Garnfabrik Rudolf Schmidt Kg Verfahren zum Zuführen von Garn zu einer Umspulmaschine
CN105177837A (zh) * 2015-07-29 2015-12-23 安徽丹凤集团桐城玻璃纤维有限公司 一种纬纱架
CN111017632A (zh) * 2019-12-27 2020-04-17 青岛大越机械科技有限公司 一种三维空间可调式纬纱支撑装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20110743A1 (it) * 2011-12-22 2012-03-22 Gd Spa Unità di alimentazione di un filo ad una macchina confezionatrice automatica.
CN109466969B (zh) * 2018-10-23 2020-12-08 江苏南瑞银龙电缆有限公司 一种软包电线电缆包装支架

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068163B (fr) * 1959-10-29
DE1145527B (de) * 1955-11-03 1963-03-14 Reiners Walter Dr Ing Spulenhalter
US3930623A (en) * 1974-12-23 1976-01-06 Leesona Corporation Package supply device
US4013243A (en) * 1974-10-18 1977-03-22 Ingo Mayer Magazine apparatus for run off spools
US4073450A (en) * 1975-09-15 1978-02-14 Aktiebolaget Iro Device for holding yarn bobbins
US4815501A (en) * 1987-03-16 1989-03-28 Tsudakoma Corp. Method of discriminating and change a yarn package
EP0352852A1 (fr) * 1988-07-25 1990-01-31 Picanol N.V. Dispositif d'alimentation de fils de trame dans les métiers à tisser
JPH02104745A (ja) * 1988-10-11 1990-04-17 Tsudakoma Corp 織機と給糸体自動交換方法と、それに使用する織機の給糸体スタンド装置
US4951718A (en) * 1987-09-02 1990-08-28 Picanol N.V. Repair of broken weft threads using plural yarn supply packages
US5012844A (en) * 1988-10-19 1991-05-07 Sulzer Brothers Limited Weft yarn threading device for a jet loom

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1068163B (fr) * 1959-10-29
DE1145527B (de) * 1955-11-03 1963-03-14 Reiners Walter Dr Ing Spulenhalter
US4013243A (en) * 1974-10-18 1977-03-22 Ingo Mayer Magazine apparatus for run off spools
US3930623A (en) * 1974-12-23 1976-01-06 Leesona Corporation Package supply device
US4073450A (en) * 1975-09-15 1978-02-14 Aktiebolaget Iro Device for holding yarn bobbins
US4815501A (en) * 1987-03-16 1989-03-28 Tsudakoma Corp. Method of discriminating and change a yarn package
US4951718A (en) * 1987-09-02 1990-08-28 Picanol N.V. Repair of broken weft threads using plural yarn supply packages
EP0352852A1 (fr) * 1988-07-25 1990-01-31 Picanol N.V. Dispositif d'alimentation de fils de trame dans les métiers à tisser
JPH02104745A (ja) * 1988-10-11 1990-04-17 Tsudakoma Corp 織機と給糸体自動交換方法と、それに使用する織機の給糸体スタンド装置
US5012844A (en) * 1988-10-19 1991-05-07 Sulzer Brothers Limited Weft yarn threading device for a jet loom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008028073B3 (de) * 2008-06-12 2009-12-10 Madeira Garnfabrik Rudolf Schmidt Kg Verfahren zum Zuführen von Garn zu einer Umspulmaschine
CN105177837A (zh) * 2015-07-29 2015-12-23 安徽丹凤集团桐城玻璃纤维有限公司 一种纬纱架
CN111017632A (zh) * 2019-12-27 2020-04-17 青岛大越机械科技有限公司 一种三维空间可调式纬纱支撑装置

Also Published As

Publication number Publication date
JPH04365753A (ja) 1992-12-17
JP2859977B2 (ja) 1999-02-24
DE69217581D1 (de) 1997-04-03
EP0518531B1 (fr) 1997-02-26
EP0518531A1 (fr) 1992-12-16

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